Apparatus for deflecting frazil and anchor-ice from power-streams.



No. 888,924., PATENTED MAY 26, 1908., F. p. PIERCE. APPARATUS FORDEFLEGTING PRAZIL AND ANCHOR ICE FROM POWER STREAMS. APPLIGATION FILEDFEB. 6, 1908. {9, 4 41' 6 2 Suveml'oz Witneaoeo I I I 6% -6 THE nuzmsPETERE ca., WASHINGTON. 0. c.

UNITED STATES PATENT oEEioE.

FRANK G. PIERCE, OF SHOSHONE, IDAHO.

APPARATUS FOR DEFLECTING FRAZIL AND ANCHOR-ICE FROM POWER-STREAMS.

Application filed February 6', 1908.

To all whomit may concern:

Be it known that I, FRANK O. PIERGE, a citizen of the United States,residing at Shoshone, in the county of Lincoln and State of Idaho, haveinvented certain new and useful Improvements in Apparatus for DeflectingFrazil and Anchor-Ice from Power-Streams; and I do declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to new and useful improvements in apparatus fordeflecting frazil and anchor ice from power streams and has for itsobject to provide simple means adapted to be arranged in a power streamfor deflecting frazil and anchor ice therefrom so as to prevent thesame'from adhering or sticking to water wheels or other hydraulicapparatus exposed to the stream and retarding or interfering with itsproper action.

With the foregoing and other objects in view which will appear as thenature of the invention is better understood, the invention consists incertain novel features of construction, combination and arrangement ofparts as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a top plan view of myinvention secured in position in a race-way; and Fig. 2 is a centralvertical longitudinal sectional view of Fig. 1. 1

Referring now more particularly to the drawings, the numeral 1represents a raceway having side walls 2 for conducting a stream ofwater to one or more water wheels or other hydraulic apparatus.

3 represents a suitable deflector grate arranged at a suitable angle inthe stream and secured in position to the race-way by supportingcross-beams 4 and 5 arranged respectively at the bottom and at asuitable distance from the upper edges of the walls of the race-way.Said deflector grate comprises a plurality of parallel rods, bars, ortubes 6 connected at adjacent ends by suitable return couplings 7. It isfound that anchor ice and frazil will stick to any surface with whichthey may come into con tact under ordinary conditions, but I have foundthat such ice will not stick or adhere to metal surfaces if a sufficientquantity of heat is imparted thereto to maintain them Specification ofLetters Patent.

Patented May 26, 1908.

Serial No. 414,587.

at a slight degree above the temperature of the surrounding water and toprevent anchor ice and frazil from sticking or adhering to the bars ortubes of said deflector grates, I provide the free ends of the outerbars with suitable terminals 8 so that an electric current may be causedto flow through the entire length of each bar. The numeral 9 representsa horizontal floor or grating of preferably triangular form which issecured at one of its edges to the top of said supporting cross-beam 5and extends entirely from one end of said cross-beam to the outer sideof the base of the opposite side wall of the race-way, said floor beingprovided at its long edge or hypotenuse with a vertical wall or grating10. The side wall of the race-way adjacent the short side of said flooris cut away above said floor to provide an overflow 11 (See Fig. 2).

In the application of my invention, it is arranged in a race-way in themanner above described. Said deflector grate while not retarding theflow of the stream in the raceway collects the anchor ice, frazil andcake therefrom and raises it on the horizontal floor 9 from where it isdeflected by the wall 10 and carried through the overflow 11. To preventthe ice from sticking or adherin to the grate, an electrical current iscause to flow therethrough to maintain it at a slight temperature abovethe surrounding Water.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood Without requiring a more extended explanation.

Having thus described my invention, what I claim as new is 1. In anapparatus for deflecting frazil anchor and other kinds of ice from powerstreams, the combination of a deflector grate arranged at an angle in astream, means for introducing electrical energy into the bars of thegrate to raise their temperature and a horizontal floor having avertical wall at one edge adapted to be arranged in the stream on alevel with the upper end of said grate.

2. In combination with a race-way, a deflector grate arranged at anangle therein, means for introducing electrical energy into the bars ofthe rate and a triangular floor having' a verticaI wall at one edgearranged horizontally in said race-way on a level with the 11 per end ofthe grate.

Si 11 an apparatus for deflecting frazil and anchorice from powerstreams, a deflector I grate comprising a plurality of parallel barsjoined at adjacent ends" by return couplings and means for introducingelectrical energy into the bars of said grate, substantially asdescribed.

4. In combination With a race-Way, a deflector grate comprising aplurality of parallel bars joined at adjacent ends arranged at an angletherein, means for introducing electrical energy into the bars of saiddeflector grate and a horizontal floor or grate having a vertical Wallat one edge arranged in sa1d raceway adjacent the upper end of saidgrate.

1n testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

F. O. PIERCE

